Perhaps you should try some spelling variations:
nhanh lang » nhanh quang, nhanh thang, nhanh dong
nhung cong » dung cong, thong cong, hang cong
tieu xanh » tieu danh, chieu xanh, dieu hanh
nhan dang » nhan dan, phan dang, tran dang
cong san » cong tac
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((nhanh lang) OR (nhan dang)) va nhung cong san ((toan cau) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - ((nhanh lang) OR (nhan dang)) va nhung cong san ((toan cau) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((nhanh lang) OR (nhan dang)) va nhung cong san ((toan cau) or (toan ban))*.